Reference of 175277-11-9, A common heterocyclic compound, 175277-11-9, name is 3-tert-Butyl-1-methylpyrazole-5-carboxylic Acid, molecular formula is C9H14N2O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route.
General procedure: Thearyl acid (1 eq) was dissolved into DMF (1-3 mL/1 mmol) and cooled to 0C. HATU(1.2 eq) and DIPEA (3.5 eq) were then added and reaction was stirred at 0C for5-10 min. The amino acid methyl ester (1 eq) was then added and reaction wasallowed to warm and stir at room temperature overnight. Reaction was pouredinto water,and extracted with EtOAc. The organic layers were combined andwashed with a 1N HCl(aq) solution, sat. NaHCO3 (aq)solution, and brine, dried over MgSO4, and concentrated in vacuo.The crude material was purified by flash chromatography (0-100% EtOAc:Hexanes gradient).9-99%
The synthetic route of 175277-11-9 has been constantly updated, and we look forward to future research findings.